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Finding the Fourth Proportional to 8,127.91, 12,188.22 and 2,580.22

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Solution

The fourth proportional to 8,127.91, 12,188.22 and 2,580.22 is: 3,869.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.91 : 12,188.22 = 2,580.22 : x
  2. Step 2: Convert to fraction form
    8,127.91/12,188.22 = 2,580.22/x
  3. Step 3: Cross multiply
    8,127.91x = 12,188.22 × 2,580.22
  4. Step 4: Simplify right side
    8,127.91x = 31,448,289.01
  5. Step 5: Solve for x
    x = 31,448,289.01/8,127.91
  6. Step 6: Final answer
    x = 3,869.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.